Reconfigurable Inductive Power Transfer Scheme Across Reinforced Concrete Walls for Building Attached Photovoltaic Grid Connection

Peng Gu; Xingzhen Guo; Yunrui Hao; Xinzhe Wang; Jiliang Zhang; Dongsheng Yang; Yijie Wang

doi:10.1109/TPEL.2025.3574008

Reconfigurable Inductive Power Transfer Scheme Across Reinforced Concrete Walls for Building Attached Photovoltaic Grid Connection

Peng Gu^*
, Xingzhen Guo
, Yunrui Hao^*
, Xinzhe Wang
, Jiliang Zhang
, Dongsheng Yang
, Yijie Wang

^*Corresponding author for this work

Northeastern University China
School of Electrical Engineering and Automation, Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A building attached photovoltaic inductive power transfer (IPT) system is proposed in this article. The coupling coefficient is significantly improved by the designed ferrite bridge (FB), which enables efficient wireless power transfer across building walls. The influence of wall-embedded rebar on system performance is analyzed, and corresponding methods to overcome it are developed. The additional core loss caused by FB and rebar is analyzed. A multitap auto-coupling coil is proposed. The voltage conversion ratio of the system can be reconfigured by switching the taps of the coil. Based on this, an IPT system is proposed to enable wireless connection between the outdoor photovoltaic system and the indoor microgrid. The circuit model of the system is built, and the transmission characteristics of the system and the losses of each part are analyzed. A three-tap IPT system prototype is built to simulate the situation of passing through a 360-mm building wall. Experiments show that the IPT system has an efficiency of approximately 90%.

Original language	English
Pages (from-to)	15891-15904
Number of pages	14
Journal	IEEE Transactions on Power Electronics
Volume	40
Issue number	10
DOIs	https://doi.org/10.1109/TPEL.2025.3574008
State	Published - 2025
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Building attached photovoltaic (BAPV)
ferrite bridge (FB)
inductive power transfer (IPT)
multitap reconfigurable coupling structure
rebar influence

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10.1109/TPEL.2025.3574008

Cite this

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title = "Reconfigurable Inductive Power Transfer Scheme Across Reinforced Concrete Walls for Building Attached Photovoltaic Grid Connection",

abstract = "A building attached photovoltaic inductive power transfer (IPT) system is proposed in this article. The coupling coefficient is significantly improved by the designed ferrite bridge (FB), which enables efficient wireless power transfer across building walls. The influence of wall-embedded rebar on system performance is analyzed, and corresponding methods to overcome it are developed. The additional core loss caused by FB and rebar is analyzed. A multitap auto-coupling coil is proposed. The voltage conversion ratio of the system can be reconfigured by switching the taps of the coil. Based on this, an IPT system is proposed to enable wireless connection between the outdoor photovoltaic system and the indoor microgrid. The circuit model of the system is built, and the transmission characteristics of the system and the losses of each part are analyzed. A three-tap IPT system prototype is built to simulate the situation of passing through a 360-mm building wall. Experiments show that the IPT system has an efficiency of approximately 90\%.",

keywords = "Building attached photovoltaic (BAPV), ferrite bridge (FB), inductive power transfer (IPT), multitap reconfigurable coupling structure, rebar influence",

author = "Peng Gu and Xingzhen Guo and Yunrui Hao and Xinzhe Wang and Jiliang Zhang and Dongsheng Yang and Yijie Wang",

note = "Publisher Copyright: {\textcopyright} 1986-2012 IEEE.",

year = "2025",

doi = "10.1109/TPEL.2025.3574008",

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volume = "40",

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AU - Gu, Peng

AU - Guo, Xingzhen

AU - Hao, Yunrui

AU - Wang, Xinzhe

AU - Zhang, Jiliang

AU - Yang, Dongsheng

AU - Wang, Yijie

PY - 2025

Y1 - 2025

N2 - A building attached photovoltaic inductive power transfer (IPT) system is proposed in this article. The coupling coefficient is significantly improved by the designed ferrite bridge (FB), which enables efficient wireless power transfer across building walls. The influence of wall-embedded rebar on system performance is analyzed, and corresponding methods to overcome it are developed. The additional core loss caused by FB and rebar is analyzed. A multitap auto-coupling coil is proposed. The voltage conversion ratio of the system can be reconfigured by switching the taps of the coil. Based on this, an IPT system is proposed to enable wireless connection between the outdoor photovoltaic system and the indoor microgrid. The circuit model of the system is built, and the transmission characteristics of the system and the losses of each part are analyzed. A three-tap IPT system prototype is built to simulate the situation of passing through a 360-mm building wall. Experiments show that the IPT system has an efficiency of approximately 90%.

AB - A building attached photovoltaic inductive power transfer (IPT) system is proposed in this article. The coupling coefficient is significantly improved by the designed ferrite bridge (FB), which enables efficient wireless power transfer across building walls. The influence of wall-embedded rebar on system performance is analyzed, and corresponding methods to overcome it are developed. The additional core loss caused by FB and rebar is analyzed. A multitap auto-coupling coil is proposed. The voltage conversion ratio of the system can be reconfigured by switching the taps of the coil. Based on this, an IPT system is proposed to enable wireless connection between the outdoor photovoltaic system and the indoor microgrid. The circuit model of the system is built, and the transmission characteristics of the system and the losses of each part are analyzed. A three-tap IPT system prototype is built to simulate the situation of passing through a 360-mm building wall. Experiments show that the IPT system has an efficiency of approximately 90%.

KW - Building attached photovoltaic (BAPV)

KW - ferrite bridge (FB)

KW - inductive power transfer (IPT)

KW - multitap reconfigurable coupling structure

KW - rebar influence

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U2 - 10.1109/TPEL.2025.3574008

DO - 10.1109/TPEL.2025.3574008

M3 - 文章

AN - SCOPUS:105006928425

SN - 0885-8993

VL - 40

SP - 15891

EP - 15904

JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

IS - 10

ER -

Reconfigurable Inductive Power Transfer Scheme Across Reinforced Concrete Walls for Building Attached Photovoltaic Grid Connection

Abstract

UN SDGs

Keywords

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